WOW! This game was a looot of fun. I'm genuinely curious how you got the loop detection to work from a programming perspective. That said, the mechanic is for sure the highlight of this game. I appreciate the leniency on some of the more complicated knots, and I found the game to be very well tuned. At first I thought I could get away with just spamming the most complicated knot but the introduction of faster fish forcing you to use simpler knots was a clever touch. Art direction is consistent but leaves something to be desired, sound contributes to the upbeat feeling of the game.
Congrats on finishing the jam, and well done!